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LTM4613
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full internal
operating temperature range, otherwise specifications are at T A = 25°C (Note 2), V IN = 24V, unless otherwise noted. Per Typical
Application (front page) configuration.
SYMBOL
V IN(DC)
PARAMETER
Input DC Voltage
CONDITIONS
l
MIN
5
TYP
MAX
36
UNITS
V
V OUT(DC)
Output Voltage, Total Variation
with Line and Load
C IN = 10μF × 3, C OUT = 47μF × 4; FCB = 0,
V IN = 24V to 36V, V OUT = 12V
l
11.83
12.07
12.31
V
Input Specifications
V IN(UVLO)
I INRUSH(VIN)
I Q(VIN)
I S(VIN)
Undervoltage Lockout Threshold
Input Inrush Current at Start-Up
Input Supply Bias Current
Input Supply Current
I OUT = 0A
I OUT = 0A; C IN = 10μF × 3, C OUT = 47μF × 4; C SS = 22nF
V OUT = 12V
V IN = 24V
V IN = 36V
V IN = 36V, V OUT = 12V, Switching Continuous, I OUT = 0A
V IN = 24V, V OUT = 12V, Switching Continuous, I OUT = 0A
Shutdown, RUN = 0, V IN = 36V
V IN = 36V, V OUT = 12V, I OUT = 8A
V IN = 24V, V OUT = 12V, I OUT = 8A
3.2
150
120
78
60
50
2.90
4.26
4.8
V
mA
mA
mA
mA
μA
A
A
V INTVCC
Internal V CC Voltage
V IN = 36V, RUN > 2V, I OUT = 0A
4.7
5
5.3
V
Output Specifications
I OUT(DC)
Output Continuous Current Range V IN = 24V, V OUT = 12V (Note 4)
0
8
A
?V OUT(LINE)
V OUT
?V OUT(LOAD)
V OUT
V IN(AC)
V OUT(AC)
f S
?V OUT(START)
t START
?V OUT(LS)
t SETTLE
I OUT(PK)
Line Regulation Accuracy
Load Regulation Accuracy
Input Ripple Voltage
Output Ripple Voltage
Output Ripple Voltage Frequency
Turn-On Overshoot
Turn-On Time
Peak Deviation for Dynamic Load
Settling Time for Dynamic Load
Step
Output Current Limit
V OUT = 12V, FCB = 0V, V IN = 24V to 36V,
I OUT = 0A
V OUT = 12V, FCB = 0V, I OUT = 0A to 8A (Note 4)
V IN = 36V
V IN = 24V
I OUT = 0A,
C IN = 1 × 10μF X5R Ceramic and 1 × 100μF Electrolytic,
3 × 10μF X5R Ceramic on V D Pins
V IN = 24V, V OUT = 12V (Note 5)
I OUT = 0A,
C OUT = 1 × 10μF, 4 × 47μF X5R Ceramic
V IN = 24V, V OUT = 12V
V IN = 24V, V OUT = 12V, I OUT = 0A
C OUT = 47μF × 4, V OUT = 12V, I OUT = 0A, C SS = 22nF
V IN = 36V
V IN = 24V
C OUT = 47μF × 4, V OUT = 12V, I OUT = 0A, C SS = Open
V IN = 36V
V IN = 24V
Load: 0% to 50% to 0% of Full Load
C OUT = 1 × 10μF, 3 × 47μF X5R Ceramic, 1 × 47μF POSCAP
V IN = 24V, V OUT = 12V
Load: 0% to 50% to 0% of Full Load
C OUT = 1 × 10μF, 3 × 47μF X5R Ceramic, 1 × 47μF POSCAP
V IN = 24V, V OUT = 12V
C OUT = 47μF × 4
V IN = 36V, V OUT = 12V
V IN = 24V, V OUT = 12V
l
l
l
0.05
0.5
0.5
10
19
600
20
20
0.3
0.3
250
100
12
12
0.3
0.75
0.75
%
%
%
mV P-P
mV P-P
kHz
mV
mV
ms
ms
mV
μs
A
A
4613f
3
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